Improvement in sheet-metal roofing



M. HORRIE. Sheet-Metal Roofing.

Patented June. 25; 1878.

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WITNESSES 'MALG OM Howls vr B AT 7-0 RN EYS I N- E ERS.PHOTO-LITHOGRAPHER, WASHINGTON. D

UNITED STATES PATENT OFFICE;

MALCOLM HORRIE, OF MORRIS, ILLINOIS, ASSIGNOR OF ONE-HALF HIS RIGHT TOFRANK B. HANDWERK, OF SAME PLACE.

IMPROVEMENT IN SHEET-METAL ROOFING.

Specification forming part of Letters Patent No. 205,188, dated June 25,1878; application filed 7 September 27, 1877. 7

To all whom it may concern;

Be it known that 1, MALCOLM HORRIE, of Morris, in the county of Grundyand State of Illinois, have invented a new and useful Improvement inSheet-Metal Roofing, which is fully described in the followingspecification, reference being had to the accompanying drawings, inwhich- Figure 1 represents a perspective view of a section of the roofcovered with sheet metal, with my improved joint; Fig. 2, a section ofthe same on an enlarged scale, taken on the line as as, Fig. 1; Fig. 3,a detail, in perspective, showing the arrangement of the parts formingthe rib-joint before clamping Fig. 4, a perspective view of the sectionof the cap which covers the joint; Fig. 5, a detailed sectional view,showing the two edges before being joined to form the flat seams of theroof and Fig. 6, a sectional view of one of said seams, taken on theline y 3 Fig. 1, on an enlarged scale.

My invention relates to the method of forming the rib-joints and seamsin sheet-metal roofs; and its object is to form a perfectly water-tightjoint.

The invention consists in various details of construction, all of whichwill be hereinafter more fully set forth.

In the drawings, A represents the roof of the building, and B the stripsof sheet metal which are used for covering it. The edges 0.

of these strips are bent up in a perpendicular position, the two bendsof two adjacent strips being arranged side by side, as shown in thedrawings, for the purpose of joining them to gether in the form of arib-joint. The extreme upper portion of these upright flanges a arefirst bent outward at right angles, thereby forming a counter-flange orbend, b, as shown in the drawings.

A fastening strip or plate of sheet metal, 0, is secured at its foot tothe boarding of the roof, and extends up between the flanges a. Theupper end of this strip is slitted, and the two parts 0 are bent inopposite directions, as shown in Fig. 1 of the drawings, and are turneddown around and under the narrow flange b, as shown in Fig. 2 of thedrawings.

A strip, D, of suitable packing material is placed between the verticalsides a, either ezgtending the whole width of the latter, or from thetop only part way down, as shown in Fig. 3 of the drawings. This stripmay be .made of canvas, or any other material which is suitable forpacking, so as to form a close tight joint, and the upper edge mayproject a little above the level of the flanges b.

If desired, the packing-strip may be saturated with paint or any otherwater-proof composition before it is placed in position; and whetherthis is done or not, after being placed in position the upper surfacesof the flanges b and the packingstrip should be thoroughly covered withpaint, laid on thick.

A cap or cover, E, is bent into such form and made of such size as toeasily slip over the upper portion of the joint above described, asshown in dotted lines in Fig. 3 of the drawings, the cap being made ofsheet meta1, with its edges disconnected, but bent round so as to comeunderneath the horizontal flanges b.

When the cap is slipped on over the joint, as shown in Fig. 3 of thedrawings,- the several parts are bent down on each side, and thoroughlyswaged together by an instrument suitable for this purpose. Under thisoperation the parts assume the position shown at 2, Fig. 2 of thedrawings, and a close water-joint is formed by means of the packing andpaint, which fill all the spaces between the cap and plates.

strip of packing, F, is placed around one of the bends, G, of the joint,as shown in Fig. 5 of the drawings, and the other bend, H, is thenhooked over it, andthe two are pressed tightly down together in theordinary way, so as to bring them into the position shown in Fig. 6.

The packin g-stri p F is of the same material as that described abovefor the rib-joint, and may be prepared in the same manner. If properlyconstructed, this joint will effectually turn all water, and the entireroofing, put together as described, will be perfectly watertight.

Any kind of paint may be used with the packing to close the joints; buta cement paint suitable for use with metallic substances is desirable onsome accounts. Y

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. The sheets B, having the double bend ab at their edges, in combination with the fastening plate or strip 0,slitted at its upper end,

with divisions bent in opposite directions around the bent edges of thesheets B, and both turned down together, substantially as and for thepurpose set forth.

2. The metal-sheets B,bent, as described, at the edges, in combinationwith the cap or cover '13, the latter bent down upon the sides of theMALCOLM HORRIE.

Witnesses:

N. MCBRIDE, A. G. WOODBREY.

